我需要按时间对这个 php 数组进行排序。 AM PM 格式 [关闭]答案

【问题标题】：I need to sort this php array by time. AM PM format [closed]我需要按时间对这个 php 数组进行排序。 AM PM 格式 [关闭]
【发布时间】：2015-12-20 21:36:42
【问题描述】：

我有这个数组：

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [title] => Vinyasa Yoga
                    [start_time] => 06:45 PM
                    [end_time] => 08:15 PM
                    [instructor] => Jock
                    [level] => All Levels
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [title] => Yoga FUNdamentals
                    [start_time] => 05:30 PM
                    [end_time] => 06:30 PM
                    [instructor] => Jock
                    [level] => Beginners
                )

        )

)

我需要按时间对这个数组进行排序，所以结果是从最早到最晚显示的。

我应该怎么做？

【问题讨论】：

标签： php arrays sorting time

【解决方案1】：

您可以使用usort。

例如：

$array = array(
    array(
        array(
            "title" => "Vinyasa Yoga",
            "start_time" => "06:45 PM",
            "end_time" => "08:15 PM",
            "instructor" => "Jock",
            "level" => "All Levels"
        )
    ),
    array(
        array(
            "title" => "Yoga FUNdamentals",
            "start_time" => "05:30 PM",
            "end_time" => "06:30 PM",
            "instructor" => "Jock",
            "level" => "Beginners"
        )
    )
);

function cmp($a, $b)
{
    $aDateTime = new DateTime($a[0]["start_time"]);
    $bDateTime = new DateTime($b[0]["start_time"]);

    return $aDateTime > $bDateTime ? 1 : -1;
};

usort($array, "cmp");

print_r($array);

将导致：

Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [title] => Yoga FUNdamentals
                    [start_time] => 05:30 PM
                    [end_time] => 06:30 PM
                    [instructor] => Jock
                    [level] => Beginners
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [title] => Vinyasa Yoga
                    [start_time] => 06:45 PM
                    [end_time] => 08:15 PM
                    [instructor] => Jock
                    [level] => All Levels
                )

        )

)

【讨论】：

这太完美了！谢谢你。我搜索了几个小时来寻找这个结果，我忘记了 $a 和 $b 变量末尾的 [0]。